CN104655170A - Measuring method for CO2 emission factors on horizontal flue of furnace outlet of power station boiler - Google Patents
Measuring method for CO2 emission factors on horizontal flue of furnace outlet of power station boiler Download PDFInfo
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- CN104655170A CN104655170A CN201410826013.4A CN201410826013A CN104655170A CN 104655170 A CN104655170 A CN 104655170A CN 201410826013 A CN201410826013 A CN 201410826013A CN 104655170 A CN104655170 A CN 104655170A
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Abstract
The invention discloses a measuring method for CO2 emission factors on a horizontal flue of a furnace outlet of a power station boiler. On the basis of the measuring point layout of a Tchebycheff measuring method, the method increases the density of measuring points on a side wall and a bottom. The number of the arranged measuring points is not less than 5 on both each horizontal width and each vertical height. The measuring method reasonably improves the measuring point layout according to the characteristic of smoke flow in the power station boiler, so that the measured data is more accurate.
Description
Technical field
The present invention relates to environmental monitoring field, particularly relate to CO on a kind of hearth outlet of power station boiler horizontal flue
2the measuring method of emission factor.
Background technology
Global warming, greenhouse gas emission is day by day subject to people and payes attention to, and the research of the thermal power industry especially coal-fired thermal power generation greenhouse gas emission factor is significant to accurately calculating the sector greenhouse gas emission.According to the flue gas content Monitoring Data of power industry statistics in 2013, in the pollutant of discharge, nearly 98% is CO
2, CO
2be main greenhouse gases, have greater environmental impacts, therefore measure CO
2discharge capacity significant to protection of the environment.
According to 2006IPCC guide, between gas, the quality of emission factor is different, for CO
2emission factor depends primarily on the carbon content of fuel.Burning condition (carbon of burning efficiency in the things such as slag and ashes remains) is relative inessential, therefore CO
2discharge can be calculated quite accurately based on mean carbon content in burning total amount and fuel.
By calculating the CO of boiler of power plant
2emission factor, according to formula CO
2discharge capacity=CO
2emission factor × Fuel Consumption, just can calculate CO
2discharge capacity.Emission factor is the typical value that an expression is discharged into relation between the quantity of pollutant in air and the activity level discharged pollutants.Emission factor is the average level of obtainable data, is used for representing the long-term level of a lot of specific discharge in a class emission source.
According to the feature of Jilin Province's boiler of power plant, at present conventional measuring method is that the Qie Beiqiefu (Log-Tchebycheff) that recommends according to international standard ISO3996-1997 and linear approach (Log-Liner) arrange the concentration that measuring point measures flue gas, the layout of the measuring point accuracy on test has important impact, and in flue gas, the kind of material and shared ratio also can affect the precision of test simultaneously.
Summary of the invention
Technical matters to be solved by this invention is to provide CO on a kind of hearth outlet of power station boiler horizontal flue
2the measuring method of emission factor, records the CO on the horizontal flue of hearth outlet of power station boiler more accurately by the method
2emission factor.
CO on a kind of hearth outlet of power station boiler horizontal flue
2the measuring method of emission factor, the point layout of this measuring method is that concrete steps are as follows based on the point layout of Qie Beiqiefu mensuration:
Step one: select to measure cross section on the horizontal flue of hearth outlet of power station boiler;
Step 2: point layout is carried out to selected measurement cross section, on the basis of Qie Beiqiefu mensuration point layout, increase the site density of sidewall and bottom, and arrange that the number of measuring point is all no less than 5 on each horizontal width and on each vertical height;
Step 3: the S type pitot tube of automatic smoke tester, sampling pipe and thermocouple thermometer are connected in parallel, three are together inserted into the concentration measuring flue gas in flue point position and flow, according to formula:
Q＝C·V
Wherein Q is smoke discharge amount, and C is flue gas concentration, and V is flue gas flow, calculates the CO of selected section
2discharge capacity;
Step 4: according to formula:
E＝Q÷M
Wherein Q is smoke discharge amount, and M is the coal-fired consumption in measuring process, calculates station boiler CO
2emission factor E.
Further, in step 2, on the basis of Qie Beiqiefu mensuration point layout, it is that 6 row 7 arrange that selected cross section is chosen measuring point, and the horizontal level of measuring point is followed successively by from left to right: 0.05L, 0.10L, 0.34L, 0.50L, 0.66L, 0.90L, 0.95L; The vertical position of measuring point is followed successively by from bottom to up: 0.08H, 0.16H, 0.35H, 0.54H, 0.73H, 0.92H, and wherein L is the horizontal width in selected cross section, and H is the vertical height in selected cross section.
Beneficial effect of the present invention is:
The present invention, on the basis of existing Qie Beiqiefu measuring point method point layout, according to the feature of flue dust flowing in station boiler, carries out rationalization to the layout of measuring point and improves, make measured data more accurate.
Accompanying drawing illustrates:
Fig. 1 measures point position schematic diagram on cross section in the present invention;
Fig. 2 is measuring point vertical direction position view on the present invention's boiler furnace outlet horizontal flue to be measured;
Fig. 3 is measuring point horizontal direction position view on the present invention's boiler furnace outlet horizontal flue to be measured.
In figure:
1,2,3,4,5,6,7-measuring point horizontal position coordinate;
A, b, c, d, e, f-measuring point vertical position coordinate;
L: sampling end face horizontal width;
H: sampling end face vertical height.
Embodiment
Below in conjunction with Figure of description, be described in further detail the specific embodiment of the present invention.
The invention discloses CO on a kind of hearth outlet of power station boiler horizontal flue
2the measuring method of emission factor, the method be used for measure hearth outlet of power station boiler horizontal flue on CO
2emission factor, and the method is particularly useful for taking brown coal as the station boiler of main fuel.
The point layout of this measuring method is that concrete steps are as follows based on the point layout of Qie Beiqiefu mensuration:
Step one: as shown in Figure 2, the horizontal flue of hearth outlet of power station boiler is selected measure cross section;
Step 2: point layout is carried out to selected measurement cross section;
As shown in Figure 1, in embodiments of the invention point layout, based on Qie Beiqiefu mensuration point layout, choosing measuring point is that 6 row 7 arrange, and increasing the site density of sidewall and bottom, the horizontal level of embodiment of the present invention measuring point is followed successively by from left to right: 0.05L, 0.10L, 0.34L, 0.50L, 0.66L, 0.90L, 0.95L; The vertical position of measuring point is followed successively by from bottom to up: 0.08H, 0.16H, 0.35H, 0.54H, 0.73H, 0.92H, and wherein L is the horizontal width in selected cross section, and H is the vertical height in selected cross section.As can be seen from the figure, compared with the point layout of Qie Beiqiefufa, the point position selected by technical solution of the present invention is closer to the two side walls of burner hearth flue and bottom surface, and namely the site density of sidewall and bottom is larger.
Step 3: the S type pitot tube of automatic smoke tester, sampling pipe and thermocouple thermometer are connected in parallel, three are together inserted into the concentration measuring flue gas in flue point position and flow, according to formula:
Q＝C·V
Wherein Q is smoke discharge amount, and C is flue gas concentration, and V is flue gas flow, calculates the CO of selected section
2discharge capacity;
Step 4: according to formula:
E＝Q÷M
Wherein Q is smoke discharge amount, and M is the coal-fired consumption in measuring process, calculates CO on hearth outlet of power station boiler horizontal flue
2emission factor E.
By measuring method of the present invention, the CO on the hearth outlet of power station boiler horizontal flue of each model that can survey
2emission factor E, by adding up the total quantity of each model boiler in a certain area, by weighted calculation, CO on the hearth outlet of power station boiler horizontal flue that just can draw this area further
2emission factor.
Claims (2)
1. CO on a hearth outlet of power station boiler horizontal flue
2the measuring method of emission factor, is characterized in that, the point layout of this measuring method is that concrete steps are as follows based on the point layout of Qie Beiqiefu mensuration:
Step one: select to measure cross section on the horizontal flue of hearth outlet of power station boiler;
Step 2: point layout is carried out to selected measurement cross section, on the basis of Qie Beiqiefu mensuration point layout, increase the site density of sidewall and bottom, and arrange that the number of measuring point is all no less than 5 on each horizontal width and on each vertical height;
Step 3: the S type pitot tube of automatic smoke tester, sampling pipe and thermocouple thermometer are connected in parallel, three are together inserted into the concentration measuring flue gas in flue point position and flow, according to formula:
Q＝C·V
Wherein Q is smoke discharge amount, and C is flue gas concentration, and V is flue gas flow, calculates the CO of selected section
2discharge capacity;
Step 4: according to formula:
E＝Q÷M
Wherein Q is smoke discharge amount, and M is the coal-fired consumption in measuring process, calculates CO on hearth outlet of power station boiler horizontal flue
2emission factor E.
2. CO on a kind of hearth outlet of power station boiler horizontal flue as claimed in claim 1
2the measuring method of emission factor, it is characterized in that, in step 2, on the basis of Qie Beiqiefu mensuration point layout, it is that 6 row 7 arrange that measuring point is chosen in selected cross section, and the horizontal level of measuring point is followed successively by from left to right: 0.05L, 0.10L, 0.34L, 0.50L, 0.66L, 0.90L, 0.95L; The vertical position of measuring point is followed successively by from bottom to up: 0.08H, 0.16H, 0.35H, 0.54H, 0.73H, 0.92H, and wherein L is the horizontal width in selected cross section, and H is the vertical height in selected cross section.
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|---|---|---|---|
| CN201410826013.4A CN104655170A (en) | 2014-12-25 | 2014-12-25 | Measuring method for CO2 emission factors on horizontal flue of furnace outlet of power station boiler |
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|---|---|---|---|
| CN201410826013.4A CN104655170A (en) | 2014-12-25 | 2014-12-25 | Measuring method for CO2 emission factors on horizontal flue of furnace outlet of power station boiler |
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Cited By (2)
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| CN105242000A (en) * | 2015-10-29 | 2016-01-13 | 广东电网有限责任公司电力科学研究院 | Method for accurate measurement of carbon emission from coal-fired power plant |
| CN113837600A (en) * | 2021-09-18 | 2021-12-24 | 西安热工研究院有限公司 | Coal-fired power plant carbon emission index real-time monitoring system and method |
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| US8399089B1 (en) * | 2007-11-30 | 2013-03-19 | Oceanit Laboratories, Inc | Highly flame retardant foam concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105242000A (en) * | 2015-10-29 | 2016-01-13 | 广东电网有限责任公司电力科学研究院 | Method for accurate measurement of carbon emission from coal-fired power plant |
| CN113837600A (en) * | 2021-09-18 | 2021-12-24 | 西安热工研究院有限公司 | Coal-fired power plant carbon emission index real-time monitoring system and method |
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Application publication date: 20150527 |